{"id":"CVE-2020-27509","title":"Persistent XSS in Galaxkey Secure Mail Client in Galaxkey up to 5.6.11.5 allows an attacker to perform an account takeover by intercepting the HTTP Post request when sending an email and injecting a specially crafted XSS payload in the '…","summary":"Persistent XSS in Galaxkey Secure Mail Client in Galaxkey up to 5.6.11.5 allows an attacker to perform an account takeover by intercepting the HTTP Post request when sending an email and injecting a specially crafted XSS payload in the '…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"vendor":"galaxkey","product":"galaxkey","affected":["galaxkey < 5.6.11.5"],"patched":["galaxkey 5.6.11.5"],"published":"2022-06-26","updated":"2026-07-05","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2020-27509","references":[{"url":"https://medium.com/@tomhulme_74888/persistent-cross-site-scripting-leading-to-full-account-takeover-on-galaxkey-v5-6-11-4-8bf96be35b54","label":"cve@mitre.org"},{"url":"http://galaxkey.com","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://medium.com/%40tomhulme_74888/persistent-cross-site-scripting-leading-to-full-account-takeover-on-galaxkey-v5-6-11-4-8bf96be35b54","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00579,"epssPercentile":0.45418,"ingestedAt":"2026-07-06T17:03:24.788Z","slug":"CVE-2020-27509","body":"## Overview\n\nPersistent XSS in Galaxkey Secure Mail Client in Galaxkey up to 5.6.11.5 allows an attacker to perform an account takeover by intercepting the HTTP Post request when sending an email and injecting a specially crafted XSS payload in the 'subject' field. The payload executes when the recipient logs into their mailbox.\n\n## Affected\n\n- `galaxkey < 5.6.11.5`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `galaxkey 5.6.11.5`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}